A049174 Revert transform of 2*x*(1 - x + x^4)-x/(1+x).

1, 1, 3, 9, 31, 111, 415, 1589, 6209, 24617, 98755, 399853, 1631223, 6695623, 27622559, 114432337, 475698713, 1983128001, 8286708835, 34692334537, 145457648071, 610578202095, 2565147448607, 10782647145589, 45338223018217

Offset

1,3

Comments

Sign diagram of generating sequence: +++--+----------...

Links

Table of n, a(n) for n=1..25.

Index entries for reversions of series

Crossrefs

Sequence in context: A047012 A120305 A049170 * A209335 A049159 A101473

Adjacent sequences: A049171 A049172 A049173 * A049175 A049176 A049177

Keyword

nonn

Author

Olivier Gérard

Extensions

NAME corrected by R. J. Mathar, Jul 23 2023

Status

approved